Mode op extracting stumps



UTE STATES PATENT OFFICE l W. O. THOMPSON AND L. HARRINGTON, OF ORANGE,MASSACHUSETTS.

MODE OF EXTRACTING STUMPS.

Specification of Letters Patent No. 15,537, dated August 12, 1856.

To all whom it may concern:

Be it known that we, l/VILLIAM O. THOMP- soN, of Orange, in the countyof Franklin, State of Massachusetts, and LEONARD HAR- RINGToN, of thecity and county of Vorcester, State of Massachusetts, have invented anew and Improved Mode of Extracting Stumps; and we do hereby declarethat the following is a full and exact description thereof, referencebeing had to the accompanying drawings and to the letters markedthereon.

The nature of our invention consists in arranging a lever (A) over thestump (B) with its fulcrum (O) on the ground. A connection is made bymeans of a chain (D) between the root (E) and the lever at someconvenient point between its fulcrum and power end. The lever thusarranged is operated by means of chains (F) or their equivalents,fastened to the power end (G) and carried over a-pulley (H) working onthe top of a working gallows frame (I). Power is then applied to thepulley H by a windlass (J) through the tackle (K).

The peculiar advantages of our machine being in the use of the gallowsframe I by which we are enabled both to control at pleasure thedirection of the force applied to the stump either to lift it verticallyor to give a rolling force or in other words to make the stump or rootson one side to serve as a fulcrum over which to draw out the other; andafter starting and loosening the roots the lever A coming in contactwith the rame'I both operate together as a single lever, with increasedvelocity lifting the stump clear, thus greatly facilitating the0peration.

We do not claim the use of a lever and lpulleys or their application toour machine,

What we Iclaim as new and desire to secure by Letters Patent is, Y

WVe claim the combination and arrangement of the lever A and gallowsframe I in connection with the pulleys or power applied, whenconstructed and operating in the manner and for the purposes above setforth and described.

WM. O. THOMPSON. LEONARD HARRINGTON. /Vitnesses:

M. Y. MCBAIN, G. WV. HENLY.

